Table 2.
Distribution of KL grades between case and control groups
| KL grade | Controls (52) | Cases (26) | Total |
|---|---|---|---|
| 0 | 30 (57.7 %) | 11 (42.3 %) | 41 |
| 1 | 22 (42.3 %) | 10 (38.5) | 32 |
| 2 | 0 | 2 (7.7 %) | 2 |
| 3 | 0 | 3 (11.5 %) | 3 |
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